Spring-trip for cultivators.



PATENTED AUG. 11, 1908.

- L.D.PUTNEY.

SPRING TRIP FOR GULTIVATORS.

APPLICATION FILED FEB.7,1908.

attomwtg LESLIE DAVID PUTNEY, or PEORIA, ILLINOI'S.

SPRING-TRIP FOR OULTIVATORS.

Specification of Letters Patent.

Patented Aug. 11, 1908 Application filed February 7, 1908. Serial No. 414,726.

To all whom it may concern:

Be it knownthat LLEsLIE DAVID PUTNEY, a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented a new and useful Spring-T rip for Cultivators, of which the following is a specification.

The invention relates to improvements in spring trips for cultivators.

The object of the present invention is to im rove the construction of spring trips for cu tivators, and to provide a simple and comparatively inexpensive device of great strength and durability, adapted to permit a cultivator tooth or shovel to swing backward when it encounters an obstruction, and to return automatically to its operative position after the obstruction has been passed.

A further object of the invention is to provide a spring of this character having the parts arranged in rear of the front of the standard so as to present no front obstruction, and capable of permitting the cultivator tooth or shovel to swing backward an increased distance.

Another object of the invention is to provide a simple arrangement, adapted to render the device either easy or hard to trip, so as to secure the desired resistance to the tripping action of the device.

With these and other objects in veiw, the invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to without departing from the s irit or sacrificing any of the advantages of t 1e invention.

In the drawing Figure 1 is a side elevation of a spring trip, constructed in accordance with this invention. Fig. 2 is afront elevation of the same. Fig. 3 is a vertical sectional view, illustrating the arrangement of the parts when the device is tripped.

Like numerals of reference designate corresponding parts in all the figures of the drawing.

1 designates a standard, which may be either straight or curved, as will be readily understood. Pivoted to the lower end of the standard, by a bolt 2, is a shank 3, provided with a lon itudinal slot or opening 4, and carrying a GlfitlVittOI tooth or shovel 5, as illustrated in dotted lines in Fig. 1 of the drawing, bolts 6 for securing the cultivator tooth or shovel to the shank being adjustably arranged in the slot or opening 4 in the usual manner.

The sides formed by the slot or opening 4 are provided at their upper ends with rearwardly extending enlargements 7, having a plurality of perforations 8, adapted to receive a bolt 9 for adjustably connecting the lower ends of apair of levers 10 to the rearwardly extending portions of the shank 3. The sides of the shank 3 are located at opposite sides of the standard 1, and the levers 10, which are also located at opposite sides of the said standard 1', are fulcrumed at an intermediate point on the lower ends of a pair of links 11 by bolts 12; The links 11, which are approximately C-shaped, are .pivoted at their upper ends to the standard 1 by means of a transverse bolt 13, spacing sleeves 14 being interposed between the standard and the upper end of the C- links, as clearly illustrated in Fig. 2 of the drawing. The upper arms of the intermediately pivoted levers 10 extend to points in advance of the central portions of the 0- links, and are provided with laterally extending lugs 1 5, having threaded perforations for the reception of adjusting screws 16, arranged to engage the front edges of the C links, as clearly illustrated in Fig. 1 of the drawing. The C-shaped link has projecting terminals and forms an intervening recess. The adjustingscrews, which are provided with polygonal heads to enable them to be readily operated by a wrench, bear against the front edges of the C-links between the forwardly extending ends thereof, and they are adapted to adjust the lovers and the links and to change the relative relation of the two members, whereby the tripping device may be rendered either hard or easy to trip. By this adjustment, the desired resistance of the device is secured to prevent the same from being tripped when a cultivator is operating in a hard soil.

The C-links are connected at an intermediate point to the lower or outer ends of convolute springs 17, secured at their inner ends 18 to the standard 1 at the side faces thereof by means of a transverse bolt 19 and eyes 20. The eyes 20 are located at opposite sides of the standard 1, and the inner ends of the springs, which are passed through the eyes, extend upward therefrom to the bolt 19, and are provided with terminal eyes 21, through which the said bolt 19 passes. The springs are preferably constructed of round steel and have lower terminal eyes for the bolts 22, which connect the springs to the links 10. The inner portions of the springs are curved forwardly and upwardly to form approximately circular loops, and the outer portions of the springs, which are located in rear of the standard when the device is set, extend downwardly and are arranged in substantially a vertical position, as clearly illustrated in Fig. 1 of the drawing.

The levers, the links and the enlargement of the sides of the shank 3 are located in rear of the standard and do not present any front obstructions, and the front portions of the loops of the springs, which are located above the upper ends of the links, are the only parts projected in advance of the standard. The adjustment afforded by the perforated rearwardly extending enlargements of the sides of theshank enable the cultivator tooth or shovel to be adjusted to run either deep or shallow, and the operation of the spring trip is not affected by this adjustment of the cultivator tooth or shovel. The adjustment of the upper arm of the lever through the screw 16 moves the same toward and from the planeof the pivots 12 and 13, and thereby varies the resistance to the tripping of the device. When the device is tripped, the shank 3 is swung rearwardly, as illustrated in Fig. 3 of the drawing, the depending portions or arms of the springs are carried forwardly and downwardly, and the springs are adapted to return the parts automatically to their initial position when the obstruction has been passed.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A spring trip for cultivators comprising a pivotally mounted shank, an approximately C-shaped link having projecting ends and forming an intermediate recess and pivoted at one of its ends, a lever fulcrumed at an intermediate point on the other end of the link and having one arm connected with the said shank, the other arm of the lever being engaged with the link at the said recess, and a spring connected with the link.

2. A spring trip for cultivators comprising a pivotally mounted shank, an approximately C-shaped link having projecting ends and forming an intervening recess and pivoted at its upper end, aleverfulcrumed at an intermediate point on the lower end of the link and having its lower arm connected with the shank, the upper arm of the lever being engaged with the link, means for adjusting the upper arm of the lever and the link with relation to each other, and a spring connected to the link.

3. A s ring trip for cultivators comprising a pivota ly mounted shank, a link pivoted at its upper end, a lever fulcrumed at an intermediate point on the lower end of the link and having its lower arm connected with the shank and provided at its upper armwith means for adjustably engaging the said link, and a spring connected with the link and arranged to exert a downward pressure on the same.

i. A spring trip for cultivators comprising a standard, a shank pivotally mounted on the standard, a link pivoted at its upper end to the standard, a lever pivotally connected at an intermediate point to the link at the lower portion thereof and having its lower arm connected with the shank, the upper arm of the lever being engaged with the link, and a convolute spring secured at its inner end to the standard at a point above the link and having a downwardly extending outer portion connected to the said link.

5. A spring trip for cultivators comprising a standard, a shank pivotally mounted on the standard, a substantially C-shaped link forming projecting ends and an intervening recess and pivoted at its upper end to the standard, a lever pivotally connected at an intermediate point to the link at the lower portion thereof and having its lower arm connected with the shank, the upper arm of the lever being provided with adjustable means for engaging the link at the recess thereof.

6. In a spring trip for cultivators, the combination with a standard, of a shank pivoted to the standard, approximately 0-shaped links located at opposite sides of the standard and pivoted at their upper ends to the same, levers pivoted at an intermediate point to the links at the lower ends thereof and having their lower arms connected with the shank and provided at their upper arms with lugs, adjusting screws mounted in perforations of the lugs and engaging the links, and springs mounted on the standard at opposite sides thereof and connected with the links.

7. In a spring trip for cultivators, the combination of a standard provided with an eye, a shank pivoted to the standard, a link also pivoted to the standard at a point above the shank, means for connecting the link with the standard, and a spring connected at its outer end to the link and having its inner end passed through the eye of the standard, and a fastening device mounted on the standard and securing the inner end of the spring to the same.

In testimony, that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

LESLIE DAVID PUTNEY.

l/Vitnesses: i

SAMUEL BURKHART, I CHARLES F. NELSON 

